RNS Number:8413I
Clean Diesel Technologies, Inc
18 March 2003


                        Clean Diesel Technologies, Inc.



NEWS RELEASE for (March 18, 2003) at 2:30 AM EST and 7:30 AM London Time
Contact:     Allen & Caron Inc        or       Clean Diesel Technologies, Inc.
             Jay F. McKeage (investors)        James M. Valentine, President
             (212) 691-8087                    David W. Whitwell, CFO
             jay@allencaron.com                (203) 327-7050
             Len Hall (media)                  (949) 474-4300
             len@allencaron.com


CLEAN DIESEL TECHNOLOGIES RECEIVES COMMERCIAL ORDERS FOR PLATINUM PLUS(R) TO
REDUCE DIESEL PARTICULATE IN UNDERGROUND MINES


Fuel Borne Catalyst and Particulate Filter Reduce Emissions 85 Percent

STAMFORD, CT (March 18, 2003) . . . Clean Diesel Technologies, Inc. (CDT) (EBB:
CDTI & AIM:CDT/CDTS) announced today that it has received an order for its
Platinum Plus(R) fuel borne catalyst (FBC) and automatic dosing equipment for
use with diesel particulate filters (DPF) on thirty diesel-powered units in
underground mines.  The order was received from a major mining engine
distributor for use in an underground coal mine in Alabama.  The Mining Safety
Health Administration (MSHA) recently tested and confirmed the ability of the
Platinum Plus FBC and a specially catalyzed DPF to reduce particulates by 85
percent with no increase in emissions of nitrogen dioxide.  The MSHA has
mandated a reduction in particulates for coal, metal and nonmetal underground
mines, with commitments for compliance required by July 2003.

Traditional, Platinum catalyzed DPFs convert a substantial portion of nitrogen
oxides into NO2 which is a strong lung irritant especially in closed quarters
like underground mines.  The PERMITTM FBC filter system developed in conjunction
with Santa Fe-based CleanAIR Systems, is the only platinum based system to have
passed the MSHA requirements for high particulate reductions with no NO2
increase.

The FBC is introduced into the engine with the fuel, reducing particulate before
it even reaches the filter. The FBC works by mixing intimately with the
particulate that deposits in the filter where it is oxidized to CO2 and water
vapor.  This unique approach allows much lower levels of platinum to be used,
reducing cost and NO2 formation.  In addition, the filter regenerates or
self-cleans at temperatures of 300-325degreesC under normal operating
conditions.  Some other systems require the filter to be manually removed and
cleaned on a regular basis.

Extensive testing in the US and Europe has shown no toxic or secondary
byproducts or emissions from use of the fuel borne catalyst.  The Platinum Plus
FBC is registered with the US EPA for use in on-highway diesel fuel.  A recent
independent evaluation of fuel injectors by Southwest Research Institute
reported no negative impact on injector flow or spray from use of the FBC after
a 1,000 hour high-load durability test.  More than 1,000 engines world wide have
successfully used the product in over 15 million miles of commercial service.


                               MORE - MORE - MORE


CLEAN DIESEL RECEIVES COMMERCIAL ORDERS FOR PLATINUM PLUS(R)

Page 2-2-2


About Clean Diesel Technologies, Inc.

Clean Diesel Technologies, Inc. is a specialty chemical company with patented
products that reduce emissions from diesel engines while simultaneously
improving fuel economy and power.  Products include Platinum Plus(R) fuel
catalysts and the ARIS(R) 2000 urea injection systems for selective catalytic
reduction of NOx.  Platinum Plus and ARIS are registered trademarks of Clean
Diesel Technologies, Inc.

For more information contact Clean Diesel Technologies directly, or visit their
web site at www.cdti.com.

Certain statements in this news release constitute "forward-looking statement"
within the meaning of the Private Securities Litigation Reform Act of 1995.
Such forward-looking statement involve known or unknown risks, including those
detailed in the Company's filings with the Securities and Exchange Commission,
uncertainties and other factors which may cause the actual results, performance
or achievements of the Company, or industry results, to be materially different
from any future results, performance or achievements expressed or implied by
such forward-looking statements.  Readers are cautioned not to place undue
reliance on these forward-looking statements, which speak only as of the date
hereof.


                                    # # # #


                      This information is provided by RNS
            The company news service from the London Stock Exchange
END
MSCILFLDVTIDLIV